Your problem is simple- either your preamp uses a tube that is a direct equivalent of a 6922 or it is the other type which can only be replaced with the same tube. If you have a 6922 whatever it is called in Russian you have the options to roll a whole variety of tubes into it. The family of those tubes includes 6DJ8,6922,7308 and Cca.
I am certain however that only one of the two mentioned and no I don't know which, is only compatible with itself.
Get that straight and then post for suggestions. I happen to use amps that use 6922s and rolled in number 4 on your list CV 2493s which are Mullard military tubes also called E88CC-01s, Unfortunately it is the nomenclature of all the 6922 variants has you confused.
Just figure for certain that the pre is compatible with 6922s and take it from there.
I would also call Victor back because I think he misunderstood your basic premise when you gave him Upscales suggested options, just ask him if you can use a plain old 6922 in your pre. IOW I think your inforest and can't see the trees. I will actually post a question on tube asylum asking if a 6H23 is a direct sub for a 6922 or not.
I am certain however that only one of the two mentioned and no I don't know which, is only compatible with itself.
Get that straight and then post for suggestions. I happen to use amps that use 6922s and rolled in number 4 on your list CV 2493s which are Mullard military tubes also called E88CC-01s, Unfortunately it is the nomenclature of all the 6922 variants has you confused.
Just figure for certain that the pre is compatible with 6922s and take it from there.
I would also call Victor back because I think he misunderstood your basic premise when you gave him Upscales suggested options, just ask him if you can use a plain old 6922 in your pre. IOW I think your inforest and can't see the trees. I will actually post a question on tube asylum asking if a 6H23 is a direct sub for a 6922 or not.